mirror of https://github.com/mpv-player/mpv
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
#include <string.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include "dhahelper.h"
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int main(int argc, char *argv[])
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{
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int fd;
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int ret;
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fd = open("/dev/dhahelper", O_RDWR);
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ioctl(fd, DHAHELPER_GET_VERSION, &ret);
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printf("api version: %d\n", ret);
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if (ret != API_VERSION)
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printf("incompatible api!\n");
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{
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dhahelper_memory_t mem;
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mem.operation = MEMORY_OP_MAP;
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//mem.start = 0xe0000000;
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mem.start = 0xe4000008;
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mem.offset = 0;
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mem.size = 0x4000;
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mem.ret = 0;
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ret = ioctl(fd, DHAHELPER_MEMORY, &mem);
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printf("ret: %s\n", strerror(errno));
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mem.ret = (int)mmap(NULL, (size_t)mem.size, PROT_READ, MAP_SHARED, fd, (off_t)0);
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printf("allocated to %x\n", mem.ret);
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if (argc > 1)
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if (mem.ret != 0)
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{
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int i;
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for (i = 0; i < 256; i++)
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printf("[%x] ", *(int *)(mem.ret+i));
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printf("\n");
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}
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munmap((void *)mem.ret, mem.size);
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mem.operation = MEMORY_OP_UNMAP;
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mem.start = mem.ret;
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ioctl(fd, DHAHELPER_MEMORY, &mem);
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}
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return(0);
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}
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